Ignition-cable housing



Nov. 23 1926.

E. s. MacPHERsoN IGNITION CABLE HOUSING Filed July 21. 1924 TMPSuva/1to1 .W .m MM M f. w

n 0 m C M M S. e e m I Patented Nov. 23, 1926.

u siren STATES nanna s. Maeriinnson, or nn'rnoI'r, MICHIGAN, AssIeNor.To nner `ritorna can conronarion, or DETROIT, MICHIGAN, A oonronarron orVIRGINIA.

IGNITION-CABLE HOUSING'.

Application led July 21, 1924. Serial No. 727,355.

The invention relates to ignition cable housings which are designedparticularly for use with internal combustionengines and has for one ofits objects the provision of an iinproved housino` for the ignitioncables which has provision for the circulation of air. Another object isto erovide housing which may be readily secured to the cylinder head ofan enginel and which may rbe manufactured at relatively low cost,Further objects of theinvention reside in the novel features ofconstruction and combinations and arrangements of parts as more fullyhereinafter set forth.

ln the drawings: y

Figure 1 is a plan View, partly broken away, of a cylinder head havingapplied thereto an ignition cable housing embodying my invention;

Fo'ure 2 is a side eleva-tion partly in section thereof;

Figure 3 is a cross section on the line 3 3 of Figure 1.

1 is the cylinder head of an internal coin-- bustion engine and 2 arethe spark plugs. 3 is the housing for the ignition cables which extendslongitudinally above the cylinder head and is secured thereto.

The housing 3 is formed preferably of sheet steel, which is drawn toform a channel closed at its ends. Thecylinder head 1 has the upwardlyextending longitudinal projection or rib 4L in which the studs aresecured at longitudinally spaced points thereof. These studs extendupwardly through the top 6 of the housing and their upper ends arethreadedly engaged by the nuts 7 for clamping the housing to thecylinder head with the open side of the former adjacent to the latter.

The main portions 8 of the housing side walls are spaced apart adistance less than the width of the longitudinal projection or lrib 4but the terminal portions 9 of these side walls and also of the housingend walls are spaced apart a distance greater' than the width of thelongitudinal projection or rib.

these portions being connected by the lateral portions 10 which extendoutwardly from the main portions. 11 are spacers preferably formed ofsheet steel and secured to the lower sides of the lateral portions y10by a suitable method such as spot welding. The lower side of each spaceris secured to a plate 12 which is adapted to engage the upper surfaceofthe longitudinal projection or rib 4. There is a spacci' with itsplate for each stud 5, the latter extending through the former. As aconsequence the parts of the lateral portions 10 of the housing betweenthe spacers are spaced above the upper surface of the longitudinalprojection or rib of the cylinder head so that air may pass between theterminal and lateral portions and this projection or rib upwardly intothe housing 3. Each plate 12 is preierably provided in its upper facewith the longitudinal grooves 13 affording air spaces and decreasing thearea of contact between the plate and the spacer secured thereto. l

To position the ignition cables within the housingv 3 the spacer 11 ispreferably provided with the integral upwardly extending portions 1stsubstantially parallel with the side walls of the housing and spacedsuiiicently from each other for the passage of the studs 1ltherebetween. These guide portions serve to prevent the ignition cablesfrom coming in contact with the studs while at the saine time theypermit the terminal portions 15 of the ignition cables to be ledoutwardly through openings in one ofthe side walls of the housing to thespark plugs.

lilith this arrangement the ignition cable housing is secured to thecylinder head in a manner to provide for passage of the air upwardlyinto the housing toV assist in cooling the cables. Also the ignitioncable housing is secured to the cylinder head in such a way that it maybe readily attached to or removed therefrom. Furthermore the ignitioncable housing has means for guiding or positioning the ignition cablesand maintaining the same from contact with the studs which secure thehousing to the cylinder head.

' What l claim as my invention is:

1. The combination with the cylinder head of an internal combustionengine, of an inverted channel shapedr ignition cable housing supportedupon said head and havin provision for the passage of air between saidhousing in suflicient amount to cool the ignif tion cables and head andupwardly into said housing. Y i

'2. The combination with the cylinder head of an internal combustionengine and ignition cables associated therewith, of an inverted channelshaped ignition cable housing and means for securing said housing tosaid head With the edges of said housing in sulilcient amount to coolthe ignition cables spaced troni said head to provide for the passage otair into the housino'.

3. The combination with the cylinder head of an internal combustionengine having a projection extending therefrom, ot a channel shapedignition cable housing having the portions or" its side Walls adjacentsaid projections spaced therefrom, and ineans for securing said housingto said projection.

le rlhe combination with the cylinder head oil' an inte 'nal combustionengine having` a projection extending thereifroni, of a channel shapedignition cable housing having f-aide walls provided with ontrfz'trdly7entendg lateral portions and substantiallyT paralcrniinal portions,ineans secured to sai l ,'al portions i'or spacing the saine rejectionand nie ns seeured to and extent through ior secnring said housing to and positioning said terininal portions s spaf1 f said projection. he coin with a channel shapec Y i cable housing, of means ior positionng' theignition cables Within said housincladiiio; a ineniiher having' a guideporenending between and substantially om vel to the eine walls thereof.

o. '.lfhe conibination with the cylinder head an internal combustionengine provided with a longit dinallj,7 e'i'tending upward projection,ot an inverted channel shaped ignition cable housing having side Wallspro- `failed with outwardly extending lateral portions andlo\,=.'n\rarclly extending terininal portions, rneans for securing saidhousing to said head inc-nidi e' ineinber secured to said projection andextending through said housing between its side Walls and a memberhaving a portion lier spacing the lateral portions ot the side walls 'frin said projection and also having integral spaced upwardly open bottoniignition cable housing sup-- ported upon said' head, thelongitis-,dinalli.,v

entendingy lower edges of the housing havingy provis on Ylor the passageof air between the cylinder headand the housing and into said housine'.

El. rEhe coi'i'ibination with a cylinder head oi' an .internalcombustion engine, oit an open bottoni ignition Aable housing supportedupon said heal, the longitudinally extend i lower edges ol the housinghaving pr Vision ilfor the passage oli air l'iotween the cylinder headand the housing and into said ising, and nieans spaced longitudinallyoit flic housino' "for supporting the housing' in ,spaced rela ion withsaid cylinder head.

9. 'lhe con'ibination with a cylinder head, et an ignition cable housingsunported above said head, ignition cables extending longitudinallyithin said housing, and ineans along the length oli the housing foradinit- 'uw air to the housino' in sullicient Quantit-J c n l V lorcooling the cables.

l0. The combination with a cylinder' head,

ot an ignition cable housing supported above said head, ignition cablesextending longindinally Within said housing, and ineans along the lengthoit the housing 'for admitA ting air to the hou 'ng for circulationabout the cables at a plurah y oi points along their length.

ll. rl`he conioination with cylinder head, oin an ignition cahle nous'nppoi ted above said head, ignition cables extendinglongitudiiiiall'y'Wi thin said housing, and ineans permitting circulation ot cooling airtransversely ol the cables at a pluralitj,7 ot points along theirlength.

ln testimony Whereot l aiix my signature,

lihrlllil S. MACPHERSON.

